<template>
  <div class="shopcar_container">
    <!-- 商品列表项区域 -->
    <div class="goods_list" v-for="(item, i) in goodslist" :key="item._id">
      <div class="mui-card">
        <div class="mui-card-content">
          <div class="mui-card-content-inner">
            <mt-switch @change="selectedChanged(item.id, $store.getters.getGoodsSelected[item.id])" v-model="$store.getters.getGoodsSelected[item.id]"></mt-switch>
            <img :src="item.img_url">
            <div class="info">
              <h1>{{ item.title }}</h1>
              <p>
                <span class="price">￥{{ item.sell_price }}</span>
                <numbox :goodsid="item.id" :initcount="$store.getters.getGoodsCount[item.id]"></numbox>
                <a href="#" @click.prevent="remove(item.id, i)">删除</a>
              </p>
            </div>
          </div>
        </div>
      </div>

      <!-- 结算区域 -->
    </div>

    <!-- 结算区域 -->
    <div class="mui-card">
      <div class="mui-card-content">
        <div class="mui-card-content-inner jiesuan">
          <div class="left">
            <p>总计(不含运费)</p>
            <p>已勾选商品 <span class="red">{{ $store.getters.getGoodsCountAndAmout.count }}</span> 件，总价 <span class="red">￥{{ $store.getters.getGoodsCountAndAmout.amount }}</span></p>
          </div>
          <mt-button type="danger">去结算</mt-button>
        </div>
      </div>
    </div>

    <p>{{ this.$store.getters.getGoodsSelected }}</p>
  </div>
</template>

<script>
import numbox from "../subcomponents/shopcar_numbox.vue";

export default {
  data() {
    return {
      goodslist: [] // 购物车中的数据
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    getGoodsList() {
      // 获取购物车中的商品列表
      // 1.获取到 store 中所有的商品的Id，然后拼接出一个用逗号分割的字符串
      var idArr = [];
      this.$store.state.car.forEach(item => idArr.push(item.id));
      if (idArr.length <= 0) {
        return;
      }
      this.$http.get("goods/getshopcarlist/" + idArr.join(",")).then(result => {
        if (result.body.status === 0) {
          this.goodslist = result.body.message;
        }
      });
    },
    remove(id, index) {
      // 点击删除，把商品从 store 中的对应数据删除和购物车中的对应数据，以及本地的对应数据
      // 删除 goodslist 中保存的购物车数据
      this.goodslist.splice(index, 1);

      this.$store.commit("removeFromCar", id);
    },
    selectedChanged(id, val) {
      // 每当点击开关，把最新的开关状态同步到 store 中
      this.$store.commit('updateGoodsSelected', {id: id, selected: val})
    }
  },
  components: {
    numbox
  }
};
</script>

<style lang="scss" scoped>
.shopcar_container {
  background-color: #eee;
  overflow: hidden;
  .goods_list {
    .mui-card-content-inner {
      display: flex;
      align-items: center;
      img {
        width: 60px;
        height: 60px;
      }
      h1 {
        font-size: 13px;
      }
      .info {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        .price {
          color: red;
          font-weight: bold;
        }
      }
    }
  }
  .jiesuan {
    display: flex;
    justify-content: space-between;
    align-content: center;
    .red {
      color: red;
      font-weight: bold;
      font-size: 16px;
    }
  }
}
</style>